The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 1988
Filed:
Dec. 23, 1986
Applicant:
Inventors:
Teiichi Miura, Furukawa, JP;
Toshihisa Hirata, Furukawa, JP;
Kengo Shibuya, Furukawa, JP;
Akira Niinuma, Furukawa, JP;
Hidenori Nagai, Furukawa, JP;
Assignee:
Alps Electric Co., Ltd., , JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ; H01H / ; H04M / ;
U.S. Cl.
CPC ...
379423 ; 200 / ; 200 / ; 379212 ;
Abstract
A telephone line-switching device comprises first and second switches that interlock and a lock plate extending between the two switches. The push member of the first switch has a cam with which the lock plate usually engages. The push member of the second switch has an inclined portion on which the lock plate always bears. As the push member of the second switch is depressed, the inclined portion horizontally moves the lock plate, permitting the lock plate to disengage from the cam to release the first switch.